---

I wish you would have sent those links to examine as soon as they were found. I will be going through those first thing in the morning.

I can say that the part about "19a and 19b" is right under this statement:
"When Upgrading FROM a KN-8828 and KN-8828D models"
Those are the two original models. You had a KN-8828B and so that reference is not relevant to your upgrade.

The upgrade procedures are complicated due to how many models, their variations, and even the machines that have been partially upgraded in the past. Because of all that is is VERY important to read ALL the steps on the upgrade page to help make you choice, and then slowly go through the specific procedure. And I am there at hottop@hottopusa.com (more hours a day than I should be), and it is a rare occasion when it takes more then 12 hours to get a response from me. So when a difficulty arises please drop us a note so that we can address the problem as best as we can.